Jessie J in charity head-shave pledge

The 'Domino' singer is going to go bald for Red Nose Day - the biennial BBC comedy telethon founded by Richard Curtis and Lenny Henry - and made the official announcement on her twitter page this afternoon after telling fans last year that she would crop her hair for charity.

Writing to fans on the social networking site, she said: "I am SO excited and honoured to be able to finally officially announce I will be shaving my head LIVE for you ALL to watch in March 2013 for @rednoseday."

Famed for her hit 'Price Tag', the star joked that "it is all about the money" - at least this time.

Follow @rednoseday please :) & let's make next year's the BEST & most memorable but most of all it is "All about the money" (This time) ;)